Press for molding cement building-blocks.



PATENTED DEC. 6, 1904.

I. P. HYER.

PRESS FOR MOLDING CEMENT BUILDING BLOGKS.

APPLICATION FILED FEB. 23, 1904.

N0 MODEL.

in mm;

w... azmmqj 3 m MW No. 776,846. Patented December 6, 1904..

UNITED STATES PATENT OFFICE..

IRVIN P. HYER, OF DAYTON, OHIO.

PRESS FOR MOLDING (DEMENT BUILDING-BLOCKS.

SPECIFICATION forming part of Letters Patent N 0. 776,846, datedDecember 6, 1904. Application filed February 23, 1904. Serial No.194,681. (No model.)

To whom it y COW/067%: plate and base of the press, which are united Beit known that I, IRVIN P. HYER, a citiat their four corners by posts zenof the United States, residing at Dayton, 4 designates aVertically-movable carrier in the county of Montgomery and State ofwhich supports the flask or mold. The same 5 Ohio, have invented certainnew and useful Imin the present instance consists of two sides 55provements in Presses for Molding (lenient 5 5, which are adjustableinward and outward Building-Blocks; and I do declare the follow- I uponthe floor 6 of the carrier, the said floor ing to be a full, clear, andexact description of also supporting the bottom plate? of the mold. theinvention, such as will enable others skilled The sides 5 of the flaskhave down ward ly-pro- 1 in the art to which it appertains to make andjected tongues 8 8 with screw-threaded openuse the same, reference beinghad to the acings therein to receive the right and left hand companyingdrawings, and to the figures of screw-threaded portions 9 and 10 of anadjustreference marked thereon, which form a part ing-screw 11. Thisadjusting-screw has a of this specification. bearing in the taperedwalls 12 12 of the car- 15 This invention relates to new and useful rierand also a bearing in its center inadown- 5 improvements in hydraulicpresses for makward-projecting portion 13 at the middle of inghollowcement or concrete building-blocks the carrier. The extreme outer endsof said and possesses the features of novelty and screw has furtherbearings in brackets 14, utility hereinafter described, and pointed outwhich are rigidly attached to the carrier 4.

2 in the claims. The said screw is operated to move inwardly 7 O Theessential features of the invention reand outwardly the sides 5 5 of theflask by late to the flask or mold and comprise admeans of a hand-wheel15, which is attached justable sides and removable ends by means to oneend of said screw. The carrier 4: has of which each molded block may becleared mounted at its four corners guide-rollers 16,

by the sides and ends of the flask and prewhich have their peripheriesgrooved to lit 75 sented for easy removal from the mold, and, againstthe upright surfaces of the posts 3. further, to means for enabling anautomatic The carrier and the flask are operated vertiremoval of thecore-blocks from the molded cally by means of the hydraulic ram 17 whichblock in the lowering of the flask after the moves within the cylinder18 in a well-known 3 operation of compressing the blocks. The manner.The ends of the flask consist of recore-blocks are quickly replaced topositions movable angle-plates 19, which fit in grooves in the molds foreach successive operation of 20 in the base of the sides 5 5. The bottommolding the cement blocks, all as will hereplate 7 also occupiesportions of the same inafter more fully appear. grooves, as will be seenfrom Fig. 3. The

Preceding a detail description of the invensaid ends 19 are adjustablelengthwise of the 5 tion, reference is made to the accompanying sideplates of the mold and are made fast to drawings, of WlllCl'lthebed-plate 7 by means of thumb-screws 22.

Figure 1 is an elevation of a press having From Fig. 2 of the drawingsit will be ohmy improvements applied thereto. Fig. 2 is served thatthese end plates 19 may be ad- 4 a plan view of the flask or mold. Fig.3 is a justed to various positions relatively to the 9 sectional View atright angles to Fig. 1. Fig. side plates 5 5 of the mold.

4 is a detail plan view of a portion of the top The cementbuilding-blocks are essentially or head of the press. Figs. 5 and 6 aredehollow in their construction and are thus contails of one of thecore-blocks removed. Figs. structed by means of core-blocks 23, which 7and 8 are detached views of the removable are caused to remain in anelevated position and adjustable ends of the flask. when the flask ormold is lowered after each In a detail description of the inventionsimioperation of pressing the cement blocks withlar reference charactersindicate correspond in the mold. The said core-blocks have proing parts.jecting upwardly from the centers thereof 5 1 and 2 designate,respectively, the headrigid or integral bars 24;, in the inner surfacesof which there are upper and lower notches 25. The lower notches areinstrumental in conjunction with detents 26 in holding the core-blocksin elevated positions when the mold or flask is lowered after theoperation of compressing the blocks. The said core-blocks are engaged inthe upper notches by the detents 26 when said blocks are in their lowerposition, and thus said core-blocks are prevented from leaving theirguides should the mold or flask be accidentally lowered to a point belowits lower normal position. These detents enable an automatic removal ofthe cores and leaves them in a suspended position to be lowered into theflask or mold for each succeeding operation. The bars 2 L extending fromthe core-blocks pass through openings in the head 1 of the press andalso have guides 27 above the top of the plate, which, together with thetop plate, form guideways in which the said bars move. The detents 26lie within the guides 27 and are normally pressed in the direction ofthe bars 24 by coilsprings 28.

29 designates finger-pieces which project rigidly from the stems of thedetents 26 and by means of which said detents maybe pressed inwardlyaway from engagement with the bars 24: to permit the core-blocks to dropinto operative positions in the mold or flask 5.

While I have described minutely the means that obtain a removal of thecore-blocks from the cement blocks when the flask or mold is loweredafter each operation of molding the blocks, I do not wish to limitmyself to the identical means herein shown and described.

Having described my invention, I claim- 1. In a press for molding cementbuildingblocks, the combination of a flask having laterally-adjustablesides and removable ends, core-blocks having extensions for holding saidcore-blocks in an upward position upon each lowering of the flask afterthe formation of a cement block, substantially as set forth.

2. In a press for molding cement buildingblocks, the combination with aflask having laterally-movable sides, and removable ends, of core-blockshaving bars extending therefrom, said bars being projected through thehead-plate of the press and provided with guideways above saidhead-plate, and detents engaging with said bars above the head-plate andserving to hold the core-blocks in position, substantially as set forth.

in testimony whereof I aflix my signature in presence of two witnesses.

IRVIN P. HYER.

Witnesses:

R. J. MOOARTY, C. M. THEOBALD

